AAON RN Series Owner's manual

RN Series
Next Gen RN
(11-140 tons)
Packaged Rooftop Units, Heat Pumps,
& Outdoor Air Handling Units
Installation, Operation,
& Maintenance
oDo not store gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
oWHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not
use any phone in your building.
Leave the building immediately.
Immediately call your gas supplier from a
phone remote from the building. Follow the
gas supplier’s instructions.
If you cannot reach your gas supplier, call
the fire department.
oStartup and service must be performed by a
Factory Trained Service Technician.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious
injury, death or property damage.
Be sure to read and understand
the installation, operation, and
service instructions in this manual.
Improper installation, adjustment,
alteration, service, or maintenance
can cause serious injury, death, or
property damage.
A copy of this IOM must be kept
with the unit.
WARNING
UL-60335

3
Table of Contents
AAON® RN Series Next Gen RN Features and Options Introduction.......................................... 8
Safety .............................................................................................................................................. 9
RN Series - Next Gen RN Feature String Nomenclature ............................................................. 15
General Information...................................................................................................................... 29
Codes and Ordinances .............................................................................................................. 29
Receiving Unit .......................................................................................................................... 30
Storage ...................................................................................................................................... 30
Wiring Diagrams....................................................................................................................... 31
Installation..................................................................................................................................... 31
Locating Units........................................................................................................................... 31
Setting the Curb ........................................................................................................................ 32
Forklifting the Unit (11, 13 and 16-30 ton) .............................................................................. 35
Lifting the Unit ......................................................................................................................... 35
Duct Connection ....................................................................................................................... 38
Seismic Curb Installation.......................................................................................................... 39
Outside Air Rain Hood ............................................................................................................. 41
End Flashing Installation .......................................................................................................... 43
Metal Mesh Filters .................................................................................................................... 43
Electrical ................................................................................................................................... 44
Variable Speed Compressors ................................................................................................ 47
Thermostat Control Wiring................................................................................................... 48
Condensate Drain Piping .......................................................................................................... 48
Draw-Through Coils ................................................................................................................. 49
Startup........................................................................................................................................... 50
Filters ........................................................................................................................................ 50
Air Flow Monitoring................................................................................................................. 50
Supply Fans............................................................................................................................... 51
Power Return Axial Flow Fans (16-25 and 30 tons) ................................................................ 53
Power Return and Exhaust Axial Flow Fans (26 and 31-70 tons)............................................ 54
Adjusting Refrigerant Charge................................................................................................... 56
Checking Liquid Sub-Cooling .............................................................................................. 56
Checking Evaporator Superheat............................................................................................ 56
Adjusting Sub-cooling and Superheat Temperatures............................................................ 59
Freeze Stat Startup .................................................................................................................... 59
Condenser Fan Electronically Commutated Motor (ECM) Startup ......................................... 64
VFD Controlled Condenser Fan Startup................................................................................... 64
Adjustable Fan Cycling Switch Procedure ............................................................................... 65
Operation....................................................................................................................................... 67
Thermostat Operation ............................................................................................................... 67
Packaged DX Cooling Operation and Control ......................................................................... 67
Gas Heater Operation................................................................................................................ 67
Electric Heating Operation ....................................................................................................... 68
Steam or Hot Water Preheating and Heating Operation........................................................... 68
Modulating Electric Preheat ..................................................................................................... 68
Chilled Water or Non-Compressorized DX Cooling Operation............................................... 68

4
Maintenance.................................................................................................................................. 68
Supply Fans............................................................................................................................... 68
Power Exhaust Motor and Belt Removal ................................................................................. 69
DX Cooling............................................................................................................................... 70
Condensate Drain Pans ............................................................................................................. 70
Brazed Plate Heat Exchanger Cleaning .................................................................................... 70
E-Coated Coil Cleaning ............................................................................................................ 71
Microchannel Coil Cleaning..................................................................................................... 72
Options.......................................................................................................................................... 74
Heating Coils ............................................................................................................................ 74
Chilled Water Coil .................................................................................................................... 75
Packaged Direct Expansion (DX) Units ................................................................................... 76
Variable Capacity Compressor Controller................................................................................ 77
Evaporator Coil (11-25 and 30 ton).......................................................................................... 79
Condenser Fans (11-25 and 30 ton).......................................................................................... 79
Suction Filter (55, 65 and 75-140 ton)...................................................................................... 80
Suction Filter Removal Instructions ..................................................................................... 81
Refrigerant-to-Water Heat Exchanger ...................................................................................... 81
Water-Source Heat Pump Applications ................................................................................ 81
Open Loop Applications ....................................................................................................... 81
Freezing Water in the Heat Exchanger ................................................................................. 82
Water Piping ......................................................................................................................... 83
Energy Recovery Units............................................................................................................. 85
Aluminum Energy Recovery Wheel..................................................................................... 86
Polymer Energy Recovery Wheel......................................................................................... 88
Energy Recovery Wheel General Cleaning .......................................................................... 95
Energy Recovery Wheel Defrost Timer Setting .................................................................. 98
Gas or Electric Heating............................................................................................................. 99
Electric Preheat ....................................................................................................................... 100
Status Display Screens ........................................................................................................ 100
System Setting Screens ....................................................................................................... 101
LED Flash Alarm Codes ..................................................................................................... 102
Operation............................................................................................................................. 103
Gas Heating............................................................................................................................. 103
Piping Sizing Examples ...................................................................................................... 105
Gas Pressure Regulator & Overpressure Protection Device............................................... 105
Piping Supports................................................................................................................... 106
Additional Gas Piping Considerations................................................................................ 106
Leak Testing........................................................................................................................ 110
Gas Heating Maintenance ................................................................................................... 112
Gas Heat Exchanger Removal ............................................................................................ 113
Phase and Brownout Protection Module ................................................................................ 114
Filter Replacement.................................................................................................................. 116
Replacement Parts................................................................................................................... 121
Appendix A - Heat Exchanger Corrosion Resistance................................................................. 124
Appendix B - Thermistor Temperature vs. Resistance Values................................................... 126

5
RNA Series Startup Form ........................................................................................................... 127
Maintenance Log ........................................................................................................................ 131
Maintenance Log (E-Coated Coil).............................................................................................. 132
Literature Change History........................................................................................................... 133
Index of Tables and Figures
Tables:
Table 1 - C Cabinet Unit Clearances ............................................................................................ 31
Table 2 - D Cabinet Unit Clearances ............................................................................................ 32
Table 3 – E Cabinet Unit Clearances............................................................................................ 32
Table 4 - Nameplate Voltage Markings & Tolerances ................................................................. 44
Table 5 - RN Series E Cabinet 55, 65, and 75-145 ton Dual Point Power Methods .................... 44
Table 6 – 35 KAIC Fuse Sizing.................................................................................................... 47
Table 7 – 65 KAIC Fuse Sizing.................................................................................................... 47
Table 8 - Variable Speed Compressor Turndown Ratio............................................................... 47
Table 9 - Control Wiring............................................................................................................... 48
Table 10 - Draw-Through Drain Trap Dimensions (Metric) ........................................................ 49
Table 11 - Draw-Through Drain Trap Dimensions (Imperial) ..................................................... 50
Table 12 - Plenum Fan Set Screw Specifications ......................................................................... 52
Table 13 - Pin Location................................................................................................................. 54
Table 14 - Pin Groove Location.................................................................................................... 54
Table 15 - Acceptable Fin & Tube Air-Cooled Condenser Coil Refrigeration Circuit Values
(Metric) ......................................................................................................................................... 57
Table 16 - Acceptable Fin & Tube Air-Cooled Condenser Coil Refrigeration Circuit Values
(Imperial) ...................................................................................................................................... 57
Table 17 - Acceptable Water-Cooled Refrigeration Circuit Values (Metric)............................... 57
Table 18 - Acceptable Water-Cooled Refrigeration Circuit Values (Imperial)............................ 57
Table 19 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values
(Metric) ......................................................................................................................................... 58
Table 20 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values
(Imperial) ...................................................................................................................................... 58
Table 21 - R-410A Refrigerant Temperature-Pressure Chart (Metric) ........................................ 60
Table 22 – R-410A Refrigerant Temperature-Pressure Chart (Imperial) ..................................... 61
Table 23 - R-454B Refrigerant Temperature-Pressure Chart (Metric)......................................... 62
Table 24 - R-454B Refrigerant Temperature-Pressure Chart (Imperial)...................................... 63
Table 25 - ECM Condenser Fan Cycling Options........................................................................ 64
Table 26 - Steam Coil Connection Sizes ...................................................................................... 75
Table 27 - Hot Water Coil Connection Sizes................................................................................ 75
Table 28 - Chilled Water Coil Connection Sizes.......................................................................... 75
Table 29 - Min and Max Water Pressures and Temps.................................................................. 75
Table 30 - Demand Signal vs. Compressor Capacity Modulation................................................ 78
Table 31 - Glycol Freezing Points ................................................................................................ 83
Table 32 - Standard Brazed Plate Heat Exchanger Water Connections ....................................... 84
Table 33 - Energy Recovery Wheel Cleaning Frequency ............................................................ 96
Table 34 - Electric and Gas Heating Capacities ........................................................................... 99
Table 35 - Stages of Electric Preheat.......................................................................................... 101

6
Table 36 -11 – 70 ton Gas Connections...................................................................................... 104
Table 37 - Natural Gas (m3/hr [ft3/hr]) Maximum Piping Capacities......................................... 104
Table 38 - Propane (kW [kBtu/hr]) Maximum Piping Capacities.............................................. 105
Table 39 - Gas Piping Supports (Metric).................................................................................... 106
Table 40 – Gas Piping Supports (Imperial) ................................................................................ 106
Table 41 - RN Series C Horizontal 11, 13, 16-25 and 30 ton Pre Filters ................................... 116
Table 42 - RN Series C Horizontal 11, 13, 16-25 and 30 ton Unit Filters ................................. 116
Table 43 - RN Series C Horizontal 11, 13, 16-25 and 30 ton Energy Recovery Wheel Filters . 117
Table 44 - RN Series C Horizontal 11, 13, 16-25 and 30 ton Final Filters ................................ 117
Table 45 - RN Series D Cabinet 26, 31, and 40 ton Pre Filters.................................................. 117
Table 46 - RN Series D Cabinet 50, 60, and 70 ton Pre Filters.................................................. 118
Table 47 - RN Series D Cabinet 26, 31, and 40 ton Unit Filters ................................................ 118
Table 48 - RN Series D Cabinet 50, 60, and 70 ton Unit Filters ................................................ 118
Table 49 - 55, 65, and 75 ton Unit Filters................................................................................... 119
Table 50 - 90-140 ton Unit Filters .............................................................................................. 119
Table 51 - RN Series D Cabinet 26, 31-50, 60, and 70 ton Energy Recovery Wheel Filters..... 119
Table 52 - 55, 65, and 75-140 ton Energy Recovery Wheel Filters ........................................... 120
Figures:
Figure 1 - Lockable Handle .......................................................................................................... 30
Figure 2 - RN Series C Cabinet, ................................................................................................... 31
Figure 3 - RN Series D Cabinet, ................................................................................................... 32
Figure 4 - RN Series E Cabinet,.................................................................................................... 32
Figure 5 - RN Series 26, 31-50, 60, and 70 ton Unit Isolator Locations ...................................... 33
Figure 6 - Steel Mounting ............................................................................................................ 34
Figure 7 - Forklifting an RN Series C Cabinet, 11, 13 and 16-30 tons ........................................ 35
Figure 8 - Lifting Details of a 11-25 and 30 ton Standard or Power Exhaust Unit ...................... 36
Figure 9 - Lifting Details of a 11-25 and 30 ton Energy Recovery Wheel or Power Return Unit36
Figure 10 - Lifting Details of a 26, 31-50, 60 and 70 ton Unit..................................................... 37
Figure 11 - Lifting Details of a 55, 65 and 75-140 ton Unit......................................................... 37
Figure 12 - Duct Connection......................................................................................................... 39
Figure 13 – Solid Bottom Seismic Curb with Filters.................................................................... 40
Figure 14 - Seismic Solid Bottom Curb without Filters Cross Section ........................................ 41
Figure 15 - Seismic Solid Bottom Curb without Filters Detail A................................................. 41
Figure 16 - Seismic Solid Bottom Curb without Filters Detail B................................................. 41
Figure 17 - Seismic Rigid Mount Curb......................................................................................... 41
Figure 18 - 11, 13 and 16-30 ton Closed Rain Hood.................................................................... 42
Figure 19 - 11, 13 and 16-30 ton Open Rain Hood ...................................................................... 42
Figure 20 - 26 and 31-70 ton Open Rain Hood ............................................................................ 42
Figure 21 - Factory Supplied End Flashings................................................................................. 43
Figure 22 - Rain Hood with Metal Mesh Filter Rack Installation ................................................ 43
Figure 23 - Unit Utility Entry ....................................................................................................... 45
Figure 24 - Back View of Power Switch from Compressor and Control Compartment (11-50, 60,
and 70 ton Units)........................................................................................................................... 45
Figure 25 - Back View of Utility Entry and Power Switch from Control Compartment (55, 65
and 75-140 ton Units) ................................................................................................................... 46
Figure 26 - Draw-Through Drain Trap ......................................................................................... 49

7
Figure 27 - Supply Fan Banding................................................................................................... 52
Figure 28 - Plenum Fan Gap Tolerances ...................................................................................... 53
Figure 29 - Fan with the HUB on the Top and RET on the Bottom............................................. 53
Figure 30 - Bushing Mount Location............................................................................................ 53
Figure 31 - RET with Pin in Groove 4.......................................................................................... 54
Figure 32 - Fan HUB and RET Castings ...................................................................................... 54
Figure 33 - Assembled Fan ........................................................................................................... 55
Figure 34 - Back of the Fan .......................................................................................................... 55
Figure 35 - Pin Groove Location .................................................................................................. 55
Figure 36 - Pitch Pin Location...................................................................................................... 55
Figure 37 - Example Pitch Pin...................................................................................................... 55
Figure 38 - 11-25 and 30 ton Supply Fan ..................................................................................... 69
Figure 39 - Bolts which Connect Motor Mount to Blower Fan.................................................... 69
Figure 40 - Variable Capacity Compressor Controller ................................................................. 77
Figure 41 - Compressor Controller Flash Code Details................................................................ 78
Figure 42 - Evaporator Coil Access.............................................................................................. 79
Figure 43 - Removal of a Condenser Fan Assembly .................................................................... 80
Figure 44 - RPE-48-BD filter element.......................................................................................... 80
Figure 45 - Aluminum Energy Recovery Wheel .......................................................................... 86
Figure 46 - Aluminum ERW Purge Sector Location.................................................................... 87
Figure 47 - Polymer Energy Recovery Wheel .............................................................................. 89
Figure 48 - Wheel Segment Removal Pattern............................................................................... 93
Figure 49 - Defrost Timer ............................................................................................................. 98
Figure 50 - Temperature Dial ....................................................................................................... 98
Figure 51 - Preheat Controller .................................................................................................... 100
Figure 52 - RN Series Gas Heat Exchanger................................................................................ 104
Figure 53 - Example 11-50, 60 & 70 ton through the Base Gas Piping ..................................... 108
Figure 54 - Example 55, 65 and 75-140 ton for across the Roof Gas Piping ............................. 109
Figure 55 - Gas Heater Instructions ............................................................................................ 111
Figure 56 - Gas Heat Exchanger................................................................................................. 113
V03830 · Rev. A · 231215

8
AAON® RN Series Next Gen RN Features and Options Introduction
Energy Efficiency
•Direct Drive Backward Curved Plenum
Supply Fans
•Two-Step, Variable Capacity and
Variable Speed R-410A Scroll
Compressors
•Airside Economizers
•Factory Installed AAONAIRE®Energy
Recovery Wheels
•Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
•Modulating Natural Gas Heaters
•Modulating/SCR Electric Heaters
•Premium Efficiency Motors
•Variable Speed Supply/Return/Exhaust
Fans
•Water-Cooled Condensers
•Air-Source, Water-Source and
Geothermal Heat Pumps
Indoor Air Quality
•100% Outside Air
•Constant Volume Outside Air Control
•Economizer CO2Override
•High Efficiency Filtration
•Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
•Interior Corrosion Protection
Humidity Control
•High Capacity Cooling Coils
•Variable Capacity Compressors
•Factory Installed AAONAIRE Total
Energy Recovery Wheels
•Mixed/Return Air Bypass
•Modulating Hot Gas Reheat
Safety
•Burglar Bars
•Freeze Stats
•Hot Water/Steam Preheat Coils
•Electric Preheat
•Phase and Brown Out Protection
•Supply/Return Smoke Detectors
Safety Continued
•Supply/Return Firestats
Installation and Maintenance
•Clogged Filter Switch
•Color Coded Wiring Diagram
•Compressors in Isolated Compartment
•Compressor Isolation Valves
•Convenience Outlet
•Direct Drive Supply Fans
•Hinged Access Doors with Lockable
Handles
•Magnehelic Gauge
•Service Lights
•Marine Lights
•Sight Glass
System Integration
•Chilled Water Cooling Coils
•Controls by Others
•Electric/Natural Gas/LP Heating
•Hot Water/Steam Heating Coil
•Non-Compressorized DX Coils
•Water-Cooled Condensers
Environmentally Friendly
•Airside Economizers
•Factory Installed AAONAIRE Energy
Recovery Wheels
•Mixed/Return Air Bypass
•R-410A Refrigerant
Extended Life
•5 Year Compressor Warranty
•15 Year Aluminized Steel Heat
Exchanger Warranty
•25 Year Stainless Steel Heat Exchanger
Warranty
•Condenser Coil Guards
•Interior Corrosion Protection
•Coil Polymer E-Coating - 5 Year Coating
Warranty
•Stainless Steel Coil Casing
•Stainless Steel Drain Pans

9
Safety
Attention must be paid to the following statements:
NOTE - Notes are intended to clarify the unit installation, operation, and maintenance.
CAUTION - Caution statements are given to prevent actions that may result in equipment
damage, property damage, or personal injury.
WARNING - Warning statements are given to prevent actions that could result in
equipment damage, property damage, personal injury or death.
DANGER - Danger statements are given to prevent actions that will result in equipment
damage, property damage, severe personal injury or death.
ELECTRIC SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in dangerous
operation, serious injury, death or
property damage.
Improper servicing could result in
dangerous operation, serious injury,
death, or property damage.

Before servicing, disconnect all
electrical power to the furnace.
More than one disconnect may be
provided.
When servicing controls, label all
wires prior to disconnecting.
Reconnect wires correctly.

Verify proper operation after
servicing. Secure all doors with
key-lock or nut and bolt.
WARNING
WHAT TO DO IF YOU SMELL GAS
Do not try to turn on unit.
Shut off main gas supply.
Do not touch any electric switch.

Do not use any phone in the
building.
Never test for gas leaks with an
open flame.
Use a gas detection soap solution
and check all gas connections and
shut off valves.
CAUTION
Electric shock hazard. Before
servicing, shut off all electrical power
to the unit, including remote
disconnects, to avoid shock hazard or
injury from rotating parts. Follow
proper Lockout-Tagout procedures.
WARNING

10
FIRE, EXPLOSION OR CARBON
MONOXIDE POISONING HAZARD
Failure to replace proper controls
could result in fire, explosion, or
carbon monoxide poisoning. Failure to
follow safety warnings exactly could
result in serious injury, death or
property damage. Do not store or use
gasoline or other flammable vapors
and
liquids in the vicinity of this
appliance.
WARNING
CARBON MONOXIDE POISONING
HAZARD
Failure to follow instructions could
result in severe personal injury or
death due to carbon-monoxide
poisoning, if combustion products
infiltrate into the building.
Check that all openings in the outside
wall around the vent (and air intake)
pipe(s) are sealed to prevent
infiltration of combustion products into
the building.
Check that furnace
vent (and air
intake) terminal(s) are not obstructed
in any way during all seasons.
WARNING
During installation, testing, servicing,
and troubleshooting of the equipment
it may be necessary to work with live
electrical components. Only a
qualified licensed electrician or
individual properly trained in handling
live electrical components shall
perform these tasks.
Standard NFPA-
70E, an OSHA
regulation requiring an Arc Flash
Boundary to be field established and
marked for identification of where
appropriate Personal Protective
Equipment (PPE) be worn, must be
followed.
WARNING
Unit power supply wire must be only
copper or aluminum.
CAUTION
ROTATING COMPONENTS
Unit contains fans with moving parts
that can cause serious injury. Do not
open door containing fans until the
power to the unit has been
disconnected and fan wheel has
stopped rotating.
WARNING

11
GROUNDING REQUIRED
All field
installed wiring must be
completed by qualified personnel.
Field installed wiring must comply with
NEC/CEC, local and state electrical
code requirements. Failure to follow
code requirements could result in
serious injury or death. Provide proper
unit ground in accordance with these
code requirements.
WARNING
VARIABLE FREQUENCY DRIVES
Do not leave VFDs unattended in
hand mode or manual bypass.
Damage to personnel or equipment
can occur if left unattended. When in
hand mode or manual bypass mode
VFDs will not respond to controls or
alarms.
WARNING
Electric motor over-current protection
and overload protection may be a
function of th
e Variable Frequency
Drive to which the motors are wired.
Never defeat the VFD motor overload
feature. The overload ampere setting
must not exceed 115% of the electric
motor’s FLA rating as shown on the
motor nameplate.
CAUTION
UNIT HANDLING
To prevent injury or death lifting
equipment capacity shall exceed unit
weight by an adequate safety factor.
Always test-lift unit not more than 24
inches high to verify proper center of
gravity lift point to avoid unit damage,
injury or death.
WARNING
Failure to properly drain and vent coils
when not in use during freezing
temperature may result in coil and
equipment damage.
CAUTION
Rotation must be checked
on all
MOTORS AND COMPRESSORS of 3
phase units at startup by a qualified
service technician. Scroll
compressors are directional and can
be damaged if rotated in the wrong
direction. Compressor rotation must
be checked using suction and
discharge gauges. Fan motor rotation
must be checked for proper operation.
Alterations must only be made at the
unit power connection
CAUTION
Do not use oxygen, acetylene or air in
place of refrigerant and dry nitrogen
for leak testing. A violent explosion
may result causing injury or death.
WARNING

12
WATER PRESSURE
Prior to connection of condensing
water supply, verify water pressure is
less than maximum pressure shown
on unit nameplate. To prevent injury
or death due to instantaneous release
of high pressure water, relief valves
must be field supplied on system
water piping.
WARNING
Always use a pressure regulator,
valves and gauges to control incoming
pressures when pressure testing a
system. Excessive pressure may
cause line ruptures, equipment
damage or an explosion which may
result in injury or death.
WARNING
To prevent damage to the unit, do not
use acidic chemical coil cleaners. Do
not use alkaline chemical coil cleaners
with a pH value greater than 8.5, after
mixing, without first using an
aluminum corrosion inhibitor in the
cleaning solution.
CAUTION
Some chemical coil cleaning
compounds are caustic or toxic. Use
these substances only in accordance
with the manufacturer’s usage
instructions.
Failure to follow
instructions may result in equipment
damage, injury or death.
WARNING
Do not clean DX refrigerant coils with
hot water or steam. The use of hot
water or steam on refrigerant coils will
cause high pressure inside the coil
tubing and damage to the coil.
CAUTION
Door compartments containing
hazardous voltage or rotating parts
are equipped wit
h door latches to
allow locks. Door latch are shipped
with nut and
bolts requiring tooled
access.
If you do not replace the
shipping hardware with a pad lock
always re-install the nut & bolt after
closing the door.
CAUTION
This appliance is not intended for use
by persons with reduced physical,
sensory or mental capabilities, or lack
of experience and knowledge, unless
they have been given supervision or
instruction concerning use of the
appliance by a person responsible for
their safety. Children must be
supervised around this appliance.
WARNING
In order to avoid a hazard due to
inadvertent resetting of the THERMAL
CUT-OUT, this appliance must not be
supplied
through an external
switching device, such as a timer, or
connected to a circuit that is regularly
switched on and off by the utility.
CAUTION

13
Cleaning the cooling tower or
condenser water loop with harsh
chemicals such as hydrochloric acid
(muriatic acid), chlorine or other
chlorides, can damage the refrigerant-
to-water heat exchanger. Care must
be taken to avoid allowing chemicals
to enter the refrigerant-to-water heat
exchanger. See Appendix A - Heat
Exchanger Corrosion Resistance for
more information.
CAUTION
OPEN LOOP APPLICATIONS
Failure of the condenser as a result of
chemical corrosion is excluded from
coverage under AAON Inc. warranties
and the heat exchanger
manufacturer’s warranties.
WARNING
WATER FREEZING
Failure of the condenser due to
freezing will allow water to enter the
refrigerant circuit and will cause
extensive damage to the refrigerant
circuit components. Any damage to
the equipment as a result of water
freezing in the condenser is excluded
from coverage under AAON
warranties and t
he heat exchanger
manufacturer warranties.
WARNING
COMPRESSOR CYCLING
3 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 3 minutes.
5 MINUTE MINIMUM ON TIME
To maintain the proper oil level
compressors must cycle on for a
minimum of 5 minutes.
The cycle rate must not exceed 7
starts per hour.
WARNING
WARNING
Disconnect power to the unit before
servicing UV-C lamps
CAUTION
Doors and panels with access to UV-
C lamps, with possible spectral
irradiance exceeding 1.7 μW/cm2 are
provided with an interlock switch. Do
not over-ride.
CAUTION
Units with VFD driven
motors/compressors have adjustable
overload settings. These are set by
the AAON factory for the protection of
these motors/compressors and must
not be adjusted over this factory
setpoint or bypassed.
WARNING

14
1. Startup and service must be performed by
a Factory Trained Service Technician.
2. Use only with type of the gas approved
for the furnace. Refer to the furnace rating
plate.
3. The unit is for outdoor use only. See
General Information section for more
information.
4. Provide adequate combustion ventilation
air to the furnace. If a vent duct extension
is used, a class III approved vent is
required. See the Locating Units and Gas
Heating sections of the Installation
section of the manual.
5. Always install and operate furnace within
the intended temperature rise range and
duct system external static pressure (ESP)
as specified on the unit nameplate.
6. The supply and return air ducts must be
derived from the same space. It is
recommended ducts be provided with
access panels to allow inspection for duct
tightness. When a down flow duct is used
with electric heat, the exhaust duct must
be an L shaped duct.
7. Clean furnace, duct and components
upon completion of the construction
setup. Verify furnace operating
conditions including input rate,
temperature rise and ESP.
8. Every unit has a unique equipment
nameplate with electrical, operational,
and unit clearance specifications. Always
refer to the unit nameplate for specific
ratings unique to the model you have
purchased.
9. READ THE ENTIRE INSTALLATION,
OPERATION AND MAINTENANCE
MANUAL. OTHER IMPORTANT
SAFETY PRECAUTIONS ARE
PROVIDED THROUGHOUT THIS
MANUAL.
10. Keep this manual and all literature
safeguarded near or on the unit.
Do not operate UV-C lamps outside of
the unit.
WARNING
Units containing UV-
C Germicidal
lamps should not be operated with
damage to the cabinet of the unit. UV-
C radiation may, even in small doses,
cause harm to the eyes and skin.
WARNING

15
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A - 0 0 0 0 0 : 0 1 - 0 A G 0 K
-
E 0 0 - 0 0 0 0 0 - 0 0 0 0 0 - C A - 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
MODEL OPTIONS
SERIES AND GENERATION
RN
MAJOR REVISION
A
UNIT SIZE
011 = 11 ton Capacity
013 = 13 ton Capacity
016 = 16 ton Capacity
018 = 18 ton Capacity
020 = 20 ton Capacity
025 = 25 ton Capacity
026 = 26 ton Capacity
030 = 30 ton Capacity
031 = 31 ton Capacity
040 = 40 ton Capacity
050 = 50 ton Capacity
060 = 60 ton Capacity
070 = 70 ton Capacity
075 = 75 ton Capacity
090 = 90 ton Capacity
105 = One Hundred Five ton Capacity
120 = One Hundred Twenty ton Capacity
130 = One Hundred Thirty ton Capacity
140 = One Hundred Forty ton Capcity
SERIES
C Series = 11-25 & 30 ton units
D Series = 26, 31, 40, 50, 60 & 70 ton units
E Series = 75 – 140 ton units
MINOR REVISION
A
VOLTAGE
1 = 230V/1Φ/60Hz
2 = 230V/3Φ/60Hz
3 = 460V/3Φ/60Hz
4 = 575V/3Φ/60Hz
6 = 380V/3Φ/50Hz
VOLTAGE (continued)
8 = 208V/3Φ/60Hz
9 = 208V/1Φ/60Hz
Model Option A: COOLING/HEAT PUMP
A1: COMPRESSOR STYLE
0 = No Compressor
A = R-410A Scroll Compressor [11-25 & 30 ton]
A = R-410A Tandem Scroll Compressor [31-70 ton]
B = R-410A 2-Step Scroll Compressor[11-20, 26 ton]
C = R-410A Variable Speed Scroll Compressor
C = R-410A Tandem Variable Speed Scroll
Compressor [31-70 tons]
D = R-410A Variable Capacity Scroll Compressor
[11-31 tons]
D = R-410A Tandem Variable Capacity Scroll
Compressor [40 tons]
E = R-410A Variable Capacity Scroll Compressor
(4-Circuit)
F = R-454B Two-Step Scroll Compressor
G = R-454B Digital Scroll Compressor
H = R-454B Variable Speed Scroll Compressor
A2: CONDENSER STYLE
0 = No Condenser
A = Microchannel Air-Cooled Condenser
F = Water-Cooled Condenser
J = Air-Source Heat Pump
J = Cold Climate Air Source Heat Pump ( If A1 = C)
L = Water-Source Heat Pump
N = DX Air Handling Unit
A3: INDOOR COIL CONFIGURATION
0 = No Cooling Coil
A = Standard Evaporator
B = 6 Row Evaporator
E = 4 Row Chilled Water Coil
F = 6 Row Chilled Water Coil
A4: COOLING HEAT EXCHANGER
CONSTRUCTION
0 = Standard
A = Polymer E-Coated Cooling Coil

16
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN A - 030 - C - 0 - 3 - C A B 0
A
- 0
0 0 0
0 : 0 1 - 0 A G 0 K
-
E 0 0 - 0 0 0 0 0 - 0 0 0 0 0 - C A - 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
A4: COOLING HEAT EXCHANGER
CONSTRUCTION (continued)
B = Stainless Steel Cooling Coil Casing
D = Option A + B
E = Polymer E-Coated Cond. Coil
J = Polymer E-Coated Evap. & Cond. Coil
T = Option B + J
A5: COOLING STAGING
0 = No Cooling
A = Variable Speed Tandem + Tandem On/Off
[40, 50, 60, 70 ton]
A = Variable Speed + Tandem On/Off [31 ton]
A = Variable Speed + On/Off
A = Variable Speed [16 ton]
C = Variable Speed + Two-Step [11, 13, 20-26 ton]
A = Variable Capacity Tandem + Tandem On/Off
[40 ton]
A = Variable Capacity + Tandem On/Off [31 ton]
A = Variable Capacity + Two-Step
A = Variable Capacity + On/Off
A = Full Face Variable Capacity + Tandem On/Off
[75 – 140 ton]
B = Dual Variable Capacity [11-25 & 30 ton]
B = 2 Variable Capacity Comp + 2 On/Off Comp
[26 & 31-70 ton]
B = 2 Variable Speed + 2 Two Step Comp
F = Single Serpentine 8 FPI
G = Half Serpentine 8 FPI
H = Single Serpentine 10 FPI
J = Half Serpentine 10 FPI
K = Single Serpentine 12 FPI
L = Half Serpentine 12 FPI
N = DX Air Handling Unit with 2 Refrigeration
Circuits
Q = DX Air Handling Unit with 4 Refrigeration
Circuits
2 = 2 Stage
4 = 4 Stage
5 = 5 Stage
6 = 6 Stage
Model Option B: HEATING
B1: HEAT TYPE
0 = No Heat
A = Electric Heat
B = Electric Heat (RN Horizontal)
C = Natural Gas
D = Natural Gas (RN Horizontal)
F = LP Gas
G = LP Gas (RN Horizontal)
J = Hot Water Coil
K = Hot Water Coil (RN Horizontal)
L = Steam Distributing Coil
M = Steam Distributing Coil (RN Horizontal)
B2: HEAT CONSTRUCTION
0 = Standard
A = Aluminum Heat Exchanger
B = Stainless Steel Heat Exchanger
C = High Altitude Aluminum Heat Exchanger
D = High Altitude Stainless Steel Heat Exchanger
G = Polymer E-Coated Heating Coil
B3: HEAT DESIGNATION
0 = No Heat
1 = Heat 1
2 = Heat 2
3 = Heat 3
4 = Heat 4
5 = Heat 5
6 = Heat 6
7 = Heat 7
A = 1 Row
E = 2 Row
B4: HEAT STAGING
0 = No Heat
A = 1 Stage
B = 2 Stage
C = 3 Stage
D = 4 Stage
E = 5 Stage
F = 6 Stage

17
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN A - 030 - C - 0 - 3 - C A B 0 A - 0 0 0
0 0 : 0 1 -
0 A G 0 K
-
E 0 0 - 0 0 0 0 0 - 0 0 0 0 0 - C A - 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
B4: HEAT STAGING (continued)
G = 7 Stage
H = 8 Stage
V = 10 Stage
J = 12 Stage
K = Modulating Gas Heat Temp Control
L = High Turndown Modulating Gas Heat -
Temperature Control
M = Modulating SCR with Temperature Control
N = Modulating SCR Electric – Temp Contro
N = Modulating SCR with External 0-10 VDC
P = Single Serpentine 8 FPI
Q = Half Serpentine 8 FPI
R = Single Serpentine 10 FPI
S = Half Serpentine 10 FPI
T = Single Serpentine 12 FPI
U = Half Serpentine 12 FPI
B5: HEAT PUMP AUX HEATING
0 = No Heat Pump
A = Aux Heat 1 for Heat Pump 1 Stage
B = Aux Heat 2 for Heat Pump 1 Stage
C = Aux Heat 3 for Heat Pump 1 Stage
D = Aux Heat 4 for Heat Pump 1 Stage
E = Aux Heat 5 for Heat Pump 1 Stage
F = Aux Heat 6 for Heat Pump 1 Stage
G = Aux Heat 7 for Heat Pump 1 Stage
K = Aux Heat 1 for Heat Pump 2 Stage
L = Aux Heat 2 for Heat Pump 2 Stage
M = Aux Heat 3 for Heat Pump 2 Stage
N = Aux Heat 4 for Heat Pump 2 Stage
P = Aux Heat 5 for Heat Pump 2 Stage
Q = Aux Heat 6 for Heat Pump 2 Stage
R = Aux Heat 7 for Heat Pump 2 Stage
U = Aux Heat 1 for Heat Pump 4 Stage
V = Aux Heat 2 for Heat Pump 4 Stage
W = Aux Heat 3 for Heat Pump 4 Stage
Y = Aux Heat 4 for Heat Pump 4 Stage
Z = Aux Heat 5 for Heat Pump 4 Stage
1 = Aux Heat 6 for Heat Pump 4 Stage
2 = Aux Heat 7 for Heat Pump 4 Stage
Feature 1: UNIT ORIENTATION
0 = Standard Access - Hinged Access Doors with
Lockable Handles
A = Draw Through Compact Supply Fan, End
Compressor Compartment, Both Side Access
B = Draw Through Compact Supply Fan, Walk-in
Vestibule with Left Vestibule Access, Both Side
Access
D = Draw Through Compact Supply Fan, Non-
Compressorized, End Control Panel, Both Side
Access
2: SUPPLY & RETURN LOCATIONS
0 = Bottom Supply--Bottom Return
A = Bottom Supply--No Return
B = Bottom Supply--Left Return
C = Bottom Supply--Right Return
D = Bottom Supply--End Return
E = Left Supply--No Return
F = Left Supply--Bottom Return
G = Left Supply--Left Return
H = Left Supply--Right Return
J = Left Supply--End Return
K = Right Supply--No Return
L = Right Supply--Bottom Return
M = Right Supply--Left Return
N = Right Supply--Right Return
P = Right Supply--End Return
Q = Top Supply--No Return
R = Top Supply--Bottom Return
S = Top Supply--Left Return
T = Top Supply--Right Return
U = Top Supply--End Return
V = Horizontal Configuration - End Supply--No
Return
Z = Horizontal Configuration - End Supply--Right
Return
1 = Horizontal Configuration - End Supply--End
Return

18
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN A - 030 - C - 0 - 3 - C A B 0 A - 0 0 0 0 0 : 0 1 - 0
A G 0 K
-
E
0
0 - 0 0 0 0 0 - 0 0 0 0 0 - C A - 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Feature 3: SUPPLY FAN OPTIONS
3A: SUPPLY FAN QUANTITY
0 = 1 Fan
A = 2 Fans
3B: SUPPLY FAN CONFIGURATION
0 = No VFDs + Full Width Fan
A = 1 Fan per VFD + Full Width Fan
B = 2 Fans per VFD + Full Width Fan
E = No VFDs + Narrow Width Fan
F = 1 Fan per VFD + Narrow Width Fan
G = 2 Fans per VFD + Narrow Width Fan
K = Option 0 + Inlet Backdraft Dampers
L = Option A + Inlet Backdraft Dampers
M = Option B + Inlet Backdraft Dampers
Q = Option E + Inlet Backdraft Dampers
R = Option F + Inlet Backdraft Dampers
S = Option G + Inlet Backdraft Dampers
3C: SUPPLY FAN SIZE
0 = 13.5” Direct Drive Backward Curved Plenum
Aluminum
A = 15” Direct Drive Backward Curved Plenum
Aluminum
B = 17” Direct Drive Backward Curved Plenum
Aluminum
C = 18.5” Direct Drive Backward Curved Plenum
Aluminum
E = 22” Direct Drive Backward Curved Plenum
Aluminum
F = 24” Direct Drive Backward Curved Plenum
Aluminum
G = 27” Direct Drive Backward Curved Plenum
Aluminum
H = 30” Direct Drive Backward Curved Plenum
Aluminum
J = 30” Direct Drive Backward Curved Plenum Steel
K = 33” Direct Drive Backward Curved Plenum Steel
L = 36.5” Direct Drive Backward Curved Plenum
Aluminum
M = 42.5” Direct Drive Backward Curved Plenum
Aluminum
3C: SUPPLY FAN SIZE (continued)
N = 355 mm Direct Drive Airfoil Aluminum
P = 400 mm Direct Drive Airfoil Aluminum
Q = 450 mm Direct Drive Airfoil Aluminum
R = 500 mm Direct Drive Airfoil Aluminum
S = 560 mm Direct Drive Airfoil Aluminum
T = 630 mm Direct Drive Airfoil Aluminum
3D: SUPPLY FAN MOTOR TYPE
0 = High Efficiency Open Motor
(1200 nominal rpm)
A = High Efficiency Open Motor
(1800 nominal rpm)
B = High Efficiency Open Motor
(3600 nominal rpm)
C = Perm Magnet AC Open Motor (1200 nominal
rpm)
D = Perm Magnet AC Open Motor (1800 nominal
rpm)
E = Perm Magnet AC Open Motor (3600 nominal
rpm)
F = ECM Motor (1200 nominal rpm)
G = ECM Motor (1800 nominal rpm)
H = ECM Motor (3600 nominal rpm)
J = ECM Motor Packaged with Fan
K = High Efficiency Totally Enclosed Motor
(1200 nominal rpm)
L = High Efficiency Totally Enclosed Motor
(1800 nominal rpm)
M = High Efficiency Totally Enclosed Motor
(3600 nominal rpm)
N = Perm Magnet AC Totally Enclosed Motor (1200
nominal rpm)
P = Perm Magnet AC Totally Enclosed Motor (1800
nominal rpm)
Q = Perm Magnet AC Totally Enclosed Motor (3600
nominal rpm)
3E: SUPPLY FAN MOTOR SIZE
D = 1 hp
F = 2 hp
G = 3 hp

19
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN A - 030 - C - 0 - 3 - C A B 0 A - 0 0 0 0 0 : 0 1 - 0 A G 0 K
-
E 0 0
- 0 0
0
0 0
- 0 0 0 0 0 - C A - 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
3E: SUPPLY FAN MOTOR SIZE (continued)
H = 5 hp
J = 7.5 hp
K = 10 hp
L = 15 hp
M = 20 hp
N = 25 hp
P = 30 hp
Q = 40 hp
R = 50 hp
Feature 4: RETURN/OUTSIDE AIR
OPTIONS
4A: OUTSIDE AIR SECTION
0 = 100% Outside Air
A = 100% Outside Air with Motorized Dampers
B = Manual Outside Air + Return Air Opening
C = Motorized Outside Air Dampers + Return Air
Opening
D = 100% Return Air
E = Economizer
F = Economizer + Power Exhaust (Axial Fans)
G = Economizer + Power Exhaust (Plenum Fans)
H = Economizer + Power Return
J = Economizer + Power Return (Plenum Fans)
K = Economizer + Energy Recovery
Q = Economizer + Energy Recovery + Bypass
Damper
4B: ENERGY RECOVERY TYPE
0 = No Energy Recovery
A = Polymer Energy Recovery Wheel
B = Polymer Energy Recovery Wheel + 1% Purge
C = Aluminum Energy Recovery Wheel
D = Aluminum Energy Recovery Wheel + 1% Purge
4C: ENERGY RECOVERY SIZE
4C: ENERGY RECOVERY SIZE (continued)
C = Low CFM Enthalpy - Single Wheel
E = Low CFM Sensible
F = High CFM Sensible
J = Low CFM Enthalpy + Exhaust Filters
K = High CFM Enthalpy + Exhaust Filters
L = Low CFM Enthalpy - Single Wheel + Exhaust
Filters
N = Low CFM Sensible + Exhaust Filters
P = High CFM Sensible + Exhaust Filters
Feature 5: RETURN FAN OPTIONS
5A: RETURN FAN QUANTITY
0 = No Return Fan
A = 1 Fan
B = 2 Fans
5B: RETURN FAN CONFIGURATION
0 = No Return Fan
A = No VFDs + Full Width Fan
B = 1 Fan per VFD + Full Width Fan
C = 2 Fans per VFD + Full Width Fan
F = No VFDs + Narrow Width
G = 1 Fan per VFD + Narrow Width
H = 2 Fans per VFD + Narrow Width
L = Option A + Inlet Backdraft Dampers
M = Option B + Inlet Backdraft Dampers
N = Option C + Inlet Backdraft Dampers
R = Option F + Inlet Backdraft Dampers
S = Option G + Inlet Backdraft Dampers
T = Option H + Inlet Backdraft Dampers
0 = No Energy Recovery
A = Low CFM Enthalpy
B = High CFM Enthalpy

20
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN A - 030 - C - 0 - 3 - C A B 0 A - 0 0 0 0 0 : 0 1 - 0 A G 0 K
-
E 0 0 - 0 0 0 0 0
- 0 0 0 0 0
- C
A
- 0 0 0 0
- 0 0 - 0
0 - 0 - 0 0 0 - 0 0 - B A 0 B - 0 0 - 0 0 0 - A 0 0 0 0 0 - C 0 0 0 0 0 - 0 0 0 0 0 0 B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
5C: RETURN FAN SIZE
0 = No Return Fan
A = 16” Axial Fan
B = 22” Axial Fan
C = 36” Axial Fan
D = 42” 9 Blade Axial Fan
E = 42” 12 Blade Axial Fan
F = 48” Axial Fan
G = 12x9 Forward Curved
H = 15” Direct Drive Backward Curved Plenum
Aluminum
J = 18.5” Direct Drive Backward Curved Plenum
Aluminum
L = 22” Direct Drive Backward Curved Plenum
Aluminum
M = 24” Direct Drive Backward Curved Plenum
Aluminum
N = 27” Direct Drive Backward Curved Plenum
Aluminum
P = 30” Direct Drive Backward Curved Plenum
Aluminum
Q = 30” Direct Drive Backward Curved Plenum Steel
R = 33” Direct Drive Backward Curved Plenum Steel
S = 36.5” Direct Drive Backward Curved Plenum
Aluminum
T = 42.5” Direct Drive Backward Curved Plenum
Aluminum
U = 355 mm Direct Drive Airfoil Aluminum
V = 400 mm Direct Drive Airfoil Aluminum
W = 450 mm Direct Drive Airfoil Aluminum
Y = 500 mm Direct Drive Airfoil Aluminum
Z = 560 mm Direct Drive Airfoil Aluminum
1 = 630 mm Direct Drive Airfoil Aluminum
5D: RETURN FAN MOTOR TYPE
0 = No Return Fan
A = High Efficiency Open Motor
(1200 nominal rpm)
B = High Efficiency Open Motor
(1800 nominal rpm)
C = High Efficiency Open Motor
(3600 nominal rpm)
5D: RETURN FAN MOTOR TYPE (continued)
D = Perm Magnet AC Open Motor (1200 nominal
rpm)
E = Perm Magnet AC Open Motor (1800 nominal
rpm)
F = Perm Magnet AC Open Motor (3600 nominal
rpm)
G = ECM Motor (1200 nominal rpm)
H = ECM Motor (1800 nominal rpm)
J = ECM Motor (3600 nominal rpm)
K = ECM Motor Packaged with Fan
L = High Efficiency Totally Enclosed Motor
(1200 nominal rpm)
M = High Efficiency Totally Enclosed Motor
(1800 nominal rpm)
N = High Efficiency Totally Enclosed Motor
(3600 nominal rpm)
5D: RETURN FAN MOTOR TYPE (continued)
P = Perm Magnet AC Totally Enclosed Motor (1200
nominal rpm)
Q = Perm Magnet AC Totally Enclosed Motor (1800
nominal rpm)
R = Perm Magnet AC Totally Enclosed Motor (3600
nominal rpm)
5E: RETURN MOTOR SIZE
0 = No Return Fan
E = 1 hp
G = 2 ph
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp
N = 20 hp
Feature 6: EXHAUST FAN OPTIONS
6A: EXHAUST FAN QUANTITY
0 = No Exhaust Fan
A = 1 Fan
B = 2 Fans